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March-8, 1932. c. MCG. sYKEs WEIGHING AND GOUNTING SCALE Filed Oct. 16, 1930 Filed Oct. 16, 1930 2 Sheets-Sheet 2 ameronM? 5.5503195 is orzwy Patented Mar. 8, 1932 [UNIT-EDT STATES vPMENT-j'ofi-*Flers CAN LMBGBBGDB, `'$YKES, 0F SHO FOUNDRY, BIRMINGHAM, ENGLAND; i

TO W. & T. AVERY LIMITED, SDI-I FOUNDRY, BIRMINGHAM, ENGLAND WEIGEEN'G COUNTING SCALE Application led October 16,1930, Seria1.No.i.489,147-anduiin Great Britain December 31, 1829i This invention has reference to improvef 'ments lin'or relating to weighing and counting scales and is concerned particularly with 4counting scales of `the kind embodying two 5 ratio jpans one of which is employed forV determining the odd number of a countl and which scales are capable also of being `elnplo ed'as ordinary weighingscales. 'lille invention consists of an improved weighing and counting scaleof the kind hereinbefore referred'to and wherein an automatic weighty indicating mechanism is. combine'd with a steelyard mechanism characterized in that'the odd numbers 4oi a count are determined by a. ratio pan which is suported froma weighing lever and capable of eing `traversed in a .longitudinal direction away vfrom and toward the fulcrum of the y said weighinglever as required, the traverse ofthe ysaid ratiopan being .capable of being eifectedV when the pan is'empty without affectngthe equilibrium ofthe scale.

The invention will 'now be described with particular reference to .the accompanying sheets of drawings which illustrate'the in vention inl t its application to a platform weighing and counting scale ofa` known kind wherein the weighing platform is connected to'an automatic weight indicating mechanism through va steelyard which has connectedy thereto a pair of `parallel tare beams.

In thev drawingsz.- V Figureyl is a front elevation of suicient of' the'scale as is necessary to an understanding of the invention. y) Y* 4Figure 2 is an end elevation of the portion of the scale illustrated in Figure 1 looking inf-the 4direction of the arrow in the saidfige Figure 3 isa detailview in front elevation illustrating the method lot mounting .the odd units pan. Figure 4 isa transverse vertical section taken on the planea-4: Figure 1 looking in the direction ofthe arrow in the said' iigure' -andomitting: .partsl of the appara-tus Whene desirable for the sake of clearness, and UU Figure 51i'sa similar view to Figure 4 but to one side than is usual with weighingsca'les with the section taken on the plane indicated l by the line 5-5 Figure 1. i In the embodimenty of the invention illustratedr the tare beams 6a 6" are extended more 4ISIS ofthe kindreferred to and the said beams have screwed thereto L-shaped casings 7 which in conjunction with the adjacent edges of the tare beams constitute slideways `for a pair ofV `racks 8 and 9 which are opp'ositely 3g disposed relatively to the fulcrum of the steelyard. These rcasings 7 are cutaway ade jacent to the ycentre to enable the teeth of the racks 8 and 9 to mesh with the teeth of a common pinion l0 which is rotatably mounted vin Vbearings carried by a bracket 11 fixed to the tare beams 6a 6b the said kpinions 1() being providedy with an` outwardly projecting spindle on which is mounted a knob 10 whereby the said spindle maybe rotated.

Attached to the upper rack :8 is a shackle 12 which embraces the upper tare beam 6l and has rotatably mounted in its upper end a roller 13 adapted to run onthe upper edge of the said tare beam 6* and in the lower en'd va roller 13b adapted'to run on the flange of the front casing 7. The lower end ofthe shackle 12 carries a knife'edge 14 upon which is mounted bearings carried by straps which carry a small unitspan 15. Fixed to the front of the units'pan 15 is an u wardly directed member 16 which is provi ed adjacent to its upperend with av slot 16* Vwhich cooperates with a pin`l2a fixed to` and projectingv outwardly from 'the shackle 12 said pin and slot serving to limit the degree ofswingf ing motion permitted to 'the units pan1'5. The shackle 12 is provided with an index v12" Awhich co-operates with graduations on the face of the tare beam 6.

The right hand portion of the rear section of the casing 7 secured to the upper tare beam 6a is cut away to permit of the Vmovement of the shackleh 12 the edge of thefcut away section serving as an abutment for the shackle 12 when the units pan l5 is in the vzero position. Y l

The face line of thefulcrum knife edge ofY Y, the steelyardv 6 is coincident with the face m9 line of the knife edge 14 when the units pan 15 is in the Zero position.

The racks 8 and 9 are arranged so that the moment of the upper rack 8 about the fulcrum of the steelyard 6 is equal and opposite to the moment of the lowermost rack 9. The weight of the shackle 12 and the units pan 15 about this fulcrum are counterbalanced by the weight- 17 mounted on and secured to the lower rack 9.

Depending from the steelyard 6C is a second ratio pan 18 the position of which is fixed relatively to the fulcrum of the steelyard at a leverage of 71 to 1. The other arm of the steelyard has depending therefrom a fixed ratio pan 19 which has a leverage of 7 2 to 1.

The weight dial of the automatic indicating mechanism is provided with two separate rings of graduations 2On 20b one corresponding to weights of a relatively heavy order and the other to weights of a lighter order.

The scale is operated in the following manner The receptacle in which the articles are to be placed is deposited on the weighing platform and tared in the usual manner.

The articles to be counted are then placed in the receptacle upon the weighing platform and the weight noted on the major Weight chart of the automatic weight indicating mechanism. One or more of the articles are then placed in the fixed ratio pan 18 until the indicator 21 returns to zero when the number of the count is obtained as half a gross for each article in the pan 18.

If an exact zeroization is not obtained by placing articles in the pan 18 the odd dozens and units are determined by placing one article in the shiftable ratio pan l5 and traversing the said pan 15 away from the fulcrum of the steelyard 6c by rotating the pinion 10 by means of the knob 10 until the indicating pointer of the weight indicating mechanism returns to zero when the graduation on the. upper tare bar 6L at which the ratio shiftable pan 15 registers with the indicating pointer 21 in the zero position indicates the odd numbers of the articles.

The count includes the articles in the pans 15 and 18 and on the weighing platform.

The pan 19 may be employed for weighing articles of a relatively light weight in which case the articles are placed inthe said pan and the weight read off on the graduations on the chart of lower weight capacity.

The pan 19 may also be used for determining the weight of half grosses of articles by placing one or more articles in the pan 19 when the weight registered on the dial is the weight of the number of half grosses represented by the number of articles in the pan 19.

It will be appreciated that by employing a pair of oppositely moving racks 8 and 9 which mesh with a common pinion 10 the shiftable pan 15 may be moved into and allowed to remain in any position when empty without affecting the equilibrium of the scale.

A weighing and counting scale constructed as hereinbefore described is simple in construction, eiiicient in operation and capable of being embodied with existing forms of weighing and counting scales without necessitating any material alteration thereto.

That I claim is 1. A weighing and counting scale embodying a steelyard, an automatic weight indicatingmechanism connected to said steelyard, a ratio pan depending from one arm of said steelyard, a pair of rack bars connected to both arms of the steelyard and capable of sliding in opposite directions longitudinally of said steelyard, a common pinion adapted to mesh with the teeth of the rack bars, means for rotating the said pinion, a units pan for determining the odd numbers of units of a count suspended from one of said rack bars, means for limiting the degree of swinging movement permitted to said units pan and means carried by the other rack bar for counterbalancing the units pan so that the equilibrium of the scale is unaffected if the units pan is traversed when empty.

2. A weighing and counting scale embodying a steelyard, an automatic weight indicating mechanism connected to said steelyard, a ratio pan depending from one arm of said steelyard, a pair of parallel longitudinally disposed tare bars, connected to both arms of the steelyard one of which bars bears graduations thereon, casings connected to said tare bars, rack bars slidably mounted within said casings, a pinion adapted to mesh with the teeth of the rack bars, means for rotating the said pinion so as to move the rack bars simultaneously in opposite directions, a runner connected to one of said rack bars and adapted to travel on one of the tare bars, a pan for determining the odd numbers of units of a count pivotally suspended from said runner, an index carried by the runner and adapted to register with the aforesaid Iraduations and means carried by the other rack bar for counterbalancing the odd numbers and units pan and runner so that the equilibrium of the scale is unaffected if the odd numbers and units pan is traversed when empty.

3. A weighing and counting scale embodying a steelyard, an automatic weight indicating mechanism connected to said steelyard and incorporating two charts one graduated in weights of a major order and one in weights of a minor order, a ratio pan depending from one arm of the steelyard and adapted to cooperate with one of said charts, a pan depending from the other arm of the said steelyard and adapted to co-operate with the other of the said charts, a pair of longitudinally disposed tare bars connected to both arms of the steelyard one of which bars bears graduations thereon, L-shaped casings connected to said tare bars, a pair of rack bars slidabb7 mounted between the internal faces of the said Y casing and the adjacent faces ofthe tare bars,`

a pinion adapted t0 mesh with the teeth of the rack bars, means for rotating the pinion whereby the rack bars may be traversed simultaneously in opposite directions, a runner fixed to one of the rack bars and adapted to travel on the tare bar carrying the rack bar to which the runner is connected, an odd number and units pan pivotally suspended from the runner, an index carried by the runner and adapted to co-operate with the aforesaid graduations and means carried by the other rack barY for counterbalancing the odd number and units pan and the runner so that the equilibrium of the scale is unaffected when the pan is traversed when empty.

In testimony whereof I have name to this specification.

CAMERON MCGREGOR SYKES.

signed my 

